Recent improvements to heating, ventilation, and cooling technologies for buildings based on renewable energy to achieve zero-energy buildings: A systematic review

Results in Engineering, Journal Year: 2024, Volume and Issue: 23, P. 102769 - 102769

Published: Aug. 31, 2024

Due to global climate change and energy market turmoil, the world is seriously pushing switch renewable diversifying sources. The building sector consumes an amount of energy, accounting for approximately 40 % energy. Therefore, concept zero-energy buildings has become more realistic than before. This study reveals latest developments in through a comprehensive literature review past ten years. Emphasis been placed on buildings' heating, ventilation, cooling systems, as they constitute most important part demand. Also, role negative resulting from improved envelope design compatible with surrounding environment, thermal insulation materials, phase vegetation cover, etc. A was also made significant technologies, which include solar installations, wind turbines, geothermal heat exchangers. showed that three main axes must be achieved reach energy-free building: Reducing waste energy-conserving improving HVAC systems. Raising efficiency performance facilities by using hybrid systems ability flexibility respond changing These are integrated approach achieving ZEBs; none can neglected. provides references researchers, institutions, decision-makers unify efforts achieve ZEBs. It aims attract attention focus research raising questions identifying gaps future address.

Language: Английский

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DOPO-modified HNTs reinforced silica aerogel composites: enhanced flame retardancy, thermal insulation, and environmental stability for silicone resins

Progress in Organic Coatings, Journal Year: 2025, Volume and Issue: 206, P. 109362 - 109362

Published: May 4, 2025

Language: Английский

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Concrete with plant-based biomass aggregates and biomass ash

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 83 - 126

Published: Jan. 1, 2025

Language: Английский

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Seasonal thermal performance of double and triple glazed windows with effects of window opening area

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 6, 2025

Despite significant advancements in building technologies, a critical gap exists understanding how Solar Heat Gain and the Cooling Effect of Ventilation (CEV) interact high-rise residential buildings. These two factors, which are crucial for achieving thermal comfort, operate opposing directions: leads to heat retention an increase indoor temperature, while CEV promotes cooling reduces temperature. This contradiction creates complex dynamic that is not well-understood, particularly context bedrooms with varying window configurations. study addresses this by investigating seasonal interplay between Window Opening Area (WOA), Gain, CEV, explicitly focusing on their variability impact different glazing configurations (double- triple-glazed windows). research conducted Dongguan, China, employs field measurements from seven winter summer. The uses advanced instruments such as pyranometers anemometers capture precise data solar radiation, airflow, enabling detailed analysis effects WOA results reveal distinct behaviours CEV. dominates winter, comfort. Smaller WOAs enhance net gain, especially configurations, where values 0.32 m2 reached 281-387 W, yielding positive Net Thermal up + 204 W. Conversely, larger during facilitated minimal through ventilation, reducing effect compromising warmth. In summer, emphasis shifts ventilation cooling, becoming primary driver For fully open (1.3 m2), double-glazed rooms demonstrated reaching 1327 resulting negative - 41 60 Triple glazing, 1001 W offered less effective natural peaking at 1179 Regression underscores strong correlation WOA, systems exhibiting higher sensitivity changes. highlights necessity adjusting seasonally-smaller openings maximise retention, summer optimise cooling. bridges knowledge gaps comfort optimisation buildings, emphasising balance required types adjustments. findings provide actionable insights architects engineers, supporting adaptive design strategies gain aligning sustainability goals energy-efficient urban living.

Language: Английский

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Energy assessment of BIPV system in code-compliant residential building in cooling-dominated climates

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(3), P. e0318786 - e0318786

Published: March 13, 2025

This study investigates the effects of climate and geographical location on building integrated photovoltaics (BIPV). An existing residential was simulated by using IES-VE software for five different climatic zones Saudi Arabia, which in accordance with ASHRAE Standard 169–2021 Building Codes (SBC) 601/ 602. The results showed that annual energy production rooftop PV systems ranged from 49,810.29 kWh to 60,204.29 kWh, cities such as Najran Tabuk having higher due solar radiation better performance systems. average global 188.15 kWh/m 2 212.52 , highest levels. found radiation, temperature, cloud cover regional patterns significantly influence monthly generation, closer equator experiencing longer daylight hours. also highlighted importance considering angular, spectral, temperature low losses, range 2.47% 2.71%, 0.84% 1.36% 8% 15.4%, respectively studies locations. would shed light impact therefore be great interest policy makers, planners industry professionals make informed decisions about deployment regions meet. Enabling a more sustainable strategy successful transition low-carbon future.

Language: Английский

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Thermal regulation for buildings using evaporative cooling technique: Experimental study

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 61, P. 104891 - 104891

Published: July 24, 2024

Global warming and increased air-conditioning demand drive up energy use. A passive cooling system for the building's roofs is one solution to this problem. The current study intends provide a unique evaporative concept building that use significantly less water than prior approaches. To reduce room temperature, saturated-activated alumina beds with 2, 4, 6 cm thicknesses were put over roof. Pure 35 PPT saline utilised evaluate performance sustainability. device successfully reduced rooftop temperatures by 84 % 70.9 after 24 h of testing (6 during daytime 18 at night) under heat loads 800 1000 W/m2. findings show salt feasible alternative freshwater does not sacrifice efficiency. From an environmental standpoint, compared bare roof, 6-cm layer saturated activated tables can annual carbon dioxide emissions 71.3 tCO2/m2 92 roof areas subjected daily solar radiation 6000 W h/day 4800 h/day, respectively.

Language: Английский

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